9/15/25, 10:20 PM COSC 325 Houston (Mechanical) EXAM Questions & Answers, Well Elaborated | Already Verified Test |100% Verified solutions | 2…
COSC 325 Houston (Mechanical) EXAM
Questions & Answers, Well Elaborated | Already
Verified Test |100% Verified solutions | 2025\2026
Latest!!
Save
Terms in this set (107)
What division is Division 23
mechanical
how many Btu/H in a ton 12000
What is comfortable 50%
relative humidity?
the speed at which air moves from one point to
Air velocity
another
what is ideal air movement 40fpm
What is the most common sheet metal, measured in gauge (smaller number
duct material thicker material)
Why insulate duct work Condensation
What is the average CO2 800
level for good indoor air
quality?
Make up air Air supplied to a space to replace exhausted air
Any foul or unwanted air removed from a space by
exhaust air
mechanical means.
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, 9/15/25, 10:20 PM COSC 325 Houston (Mechanical) EXAM Questions & Answers, Well Elaborated | Already Verified Test |100% Verified solutions | 2…
What is the normal 20 cubic feet per minute per person in the space
building space
requirement for fresh
outside air
American Society of Heating, Refrigerating and Air-
ASHRAE
Conditioning Engineers
5 requirements for proper temperature, humidity, circulation, filtration,
comfort ventilation
Dry Bulb Temperature the measurement of sensible heat
the amount of water vapor present in air expressed as
Relative Humidity (RH) a percentage of the amount needed for saturation at
the same temperature.
the temperature below which moisture in the air
Dew point(dp)
begins to condense
The total heat contained in a substance measured
Enthalpy (h)
from a baseline of 32 degrees farenheit
Where is relative humidity the curving lines that run from the bottom left side of
found on a psychometric the chart up to the right
chart?
fuel heats air, which is blown through ducts and vents;
forced air system
cool air is returned to the furnace to be reheated
Three must common types upflow, horizontal, and downflow (counterflow)
of furnaces
return air is supplied at the bottom of the unit and the
Upflow Furnace heated air is delivered to the bonnet above the
furnace where it is distributed through ductwork
furnace in which heated air flows horizontally as it
horizontal flow furnace
leaves the furnace
furnace is typ. located on first floor and heated air is
Downflow Furnace pushed down into ductwork located in a crawl space
or basement.
https://quizlet.com/1076896016/cosc-325-houston-mechanical-exam-questions-answers-well-elaborated-already-verified-test-100-verified-solutions-20… 2/8
COSC 325 Houston (Mechanical) EXAM
Questions & Answers, Well Elaborated | Already
Verified Test |100% Verified solutions | 2025\2026
Latest!!
Save
Terms in this set (107)
What division is Division 23
mechanical
how many Btu/H in a ton 12000
What is comfortable 50%
relative humidity?
the speed at which air moves from one point to
Air velocity
another
what is ideal air movement 40fpm
What is the most common sheet metal, measured in gauge (smaller number
duct material thicker material)
Why insulate duct work Condensation
What is the average CO2 800
level for good indoor air
quality?
Make up air Air supplied to a space to replace exhausted air
Any foul or unwanted air removed from a space by
exhaust air
mechanical means.
https://quizlet.com/1076896016/cosc-325-houston-mechanical-exam-questions-answers-well-elaborated-already-verified-test-100-verified-solutions-20… 1/8
, 9/15/25, 10:20 PM COSC 325 Houston (Mechanical) EXAM Questions & Answers, Well Elaborated | Already Verified Test |100% Verified solutions | 2…
What is the normal 20 cubic feet per minute per person in the space
building space
requirement for fresh
outside air
American Society of Heating, Refrigerating and Air-
ASHRAE
Conditioning Engineers
5 requirements for proper temperature, humidity, circulation, filtration,
comfort ventilation
Dry Bulb Temperature the measurement of sensible heat
the amount of water vapor present in air expressed as
Relative Humidity (RH) a percentage of the amount needed for saturation at
the same temperature.
the temperature below which moisture in the air
Dew point(dp)
begins to condense
The total heat contained in a substance measured
Enthalpy (h)
from a baseline of 32 degrees farenheit
Where is relative humidity the curving lines that run from the bottom left side of
found on a psychometric the chart up to the right
chart?
fuel heats air, which is blown through ducts and vents;
forced air system
cool air is returned to the furnace to be reheated
Three must common types upflow, horizontal, and downflow (counterflow)
of furnaces
return air is supplied at the bottom of the unit and the
Upflow Furnace heated air is delivered to the bonnet above the
furnace where it is distributed through ductwork
furnace in which heated air flows horizontally as it
horizontal flow furnace
leaves the furnace
furnace is typ. located on first floor and heated air is
Downflow Furnace pushed down into ductwork located in a crawl space
or basement.
https://quizlet.com/1076896016/cosc-325-houston-mechanical-exam-questions-answers-well-elaborated-already-verified-test-100-verified-solutions-20… 2/8
